For optimal secure communication with us you can use our PGP/GPG public key.
As of 26 March 2015 you can download / import our new public key here with the following fingerprint: 8A232A0B15FF196F8AE4D8216CB07933462128C2

Our old PGP/GPG public key is still available in case you need it for verification or other reasons:
old key with the following fingerprint: C029A819B55AF93E0A2C34B439C6743C0543CCB8